49 PATAGONIAN EXPEDITIONS: ZOOLOGY. 



Tarsus, 2.25. 



The adult female bird averages somewhat smaller than the male. 



Color. (Male cited.) General color: Slaty gray, with white wing-bars 

 and abdomen. 



Head : Pale gray ; darker on the crown and a deeper shade from the 

 base of the bill to back of the eye ; upper and lower eyelid white, which is 

 prolonged into a stripe curving slightly downward and extending almost to 

 the occiput, where it gradually narrows to a point and is lost ; this mark- 

 ing is definite and in no way obscure or obsolete ; sides of the head and 

 face slaty gray, paler than on the crown. 



FIG. 247. 



Tachyeres cinereus. P. U. O. C. 8847. Adult male. Rio Negro, Patagonia, February, 1898. 



Profile of head and neck. Reduced. 



Neck : Pale slaty gray like the sides of the head and terminating defi- 

 nitely and abruptly in the darker color of the chest and back ; there is an 

 area on the throat, beginning back of the chin on the upper throat and 

 extending half way to the chest, of reddish cinnamon-brown ; it is definite 

 and clearly outlined. 



Back : Mantle dark slate-gray, each feather with a darker subapical 

 band, giving the scaled appearance; lower back, rump and upper tail- 

 coverts dark slate-gray, without the markings on the mantle ; the upper 

 tail-coverts shaded slightly with olive. 



